Tim Schaub
054af09032
This updates ESLint and our shared eslint-config-openlayers to use Prettier. Most formatting changes were automatically applied with this:
npm run lint -- --fix
A few manual changes were required:
* In `examples/offscreen-canvas.js`, the `//eslint-disable-line` comment needed to be moved to the appropriate line to disable the error about the `'worker-loader!./offscreen-canvas.worker.js'` import.
* In `examples/webpack/exapmle-builder.js`, spaces could not be added after a couple `function`s for some reason. While editing this, I reworked `ExampleBuilder` to be a class.
* In `src/ol/format/WMSGetFeatureInfo.js`, the `// @ts-ignore` comment needed to be moved down one line so it applied to the `parsersNS` argument.
51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
/**
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* @module ol/geom/flat/straightchunk
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*/
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/**
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* @param {number} maxAngle Maximum acceptable angle delta between segments.
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* @param {Array<number>} flatCoordinates Flat coordinates.
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* @param {number} offset Offset.
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* @param {number} end End.
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* @param {number} stride Stride.
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* @return {Array<number>} Start and end of the first suitable chunk of the
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* given `flatCoordinates`.
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*/
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export function matchingChunk(maxAngle, flatCoordinates, offset, end, stride) {
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let chunkStart = offset;
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let chunkEnd = offset;
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let chunkM = 0;
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let m = 0;
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let start = offset;
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let acos, i, m12, m23, x1, y1, x12, y12, x23, y23;
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for (i = offset; i < end; i += stride) {
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const x2 = flatCoordinates[i];
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const y2 = flatCoordinates[i + 1];
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if (x1 !== undefined) {
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x23 = x2 - x1;
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y23 = y2 - y1;
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m23 = Math.sqrt(x23 * x23 + y23 * y23);
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if (x12 !== undefined) {
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m += m12;
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acos = Math.acos((x12 * x23 + y12 * y23) / (m12 * m23));
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if (acos > maxAngle) {
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if (m > chunkM) {
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chunkM = m;
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chunkStart = start;
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chunkEnd = i;
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}
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m = 0;
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start = i - stride;
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}
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}
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m12 = m23;
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x12 = x23;
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y12 = y23;
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}
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x1 = x2;
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y1 = y2;
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}
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m += m23;
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return m > chunkM ? [start, i] : [chunkStart, chunkEnd];
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}
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